Official website: http://program.tving.com/tvn/abyss
Park Bo-young
Go Se-yeon / Lee Mi-do
Ahn Hyo-seop
Cha-min
Lee Sung-jae
Oh Young-cheol
Lee Si-eon
Park Dong-cheol
Song Sang-eun
Lee Mi-do
Han So-hee
Jang Hee-jin
Kwon Soo-hyun
Seo Ji-wook
Yun Yoo-sun
Eom Ae-ran
Park Seong-yeon
Park Mi-soon
Lee Cheol-min
Park Ki-man
